[UPDATE, May 5th:The National Postquotes Peter Brown, a professor at the University of Western Ontario who studies meteors, as saying that "based on the data and the eyewitness reports, it appears the shockwave occurred in the area of Peterborough, and its characteristics allowed for an estimate of the size of the meteor." A Globe and Mailreport adds that the "once-in-a-decade astronomical event" has Ontarians poised for a "large and possibly lucrative rock hunt throughout Southern Ontario"—and that most speculated the meteor disappeared somewhere around Peterborough, Ont. The "Peterborough meteor", as the Globe article refers to it as, measured between half a metre and a metre in diameter and weighs at least one metric ton.]